A/C Coils Freezing Up? When To Call A Pro An air conditioner that “freezes up” is actually a victim of the A/C coils freezing up. As a result, homeowners may find themselves without any air conditioning, and will need to troubleshoot the system or call a pro. When A/C coils freeze, there could be a simple solution to the problem; however, more complicated scenarios may have caused the freezing. Before you call a pro, it pays to investigate the source of the problem. The evaporator coil is prone to freezing, primarily because it transfers heat, or evaporates it, from the indoor to the outdoor air. In the process, it also drains a lot of condensation. When problems occur, this condensation can form a block of ice around the coil, causing it to freeze. At this point, the air conditioner won’t work anymore. Four primary factors lead to the A/C coils freezing up: Regardless of the cause, frozen coils prohibit heat from dissipating as it moves over the coil, the coil becomes overcooled, and condensation and ice can form.

Follow these steps to troubleshoot coil freeze: Shut down the A/C by setting the thermostat to “off.”If it’s dirty, it’s likely restricting airflow. Install a new filter, and turn the A/C back on. If the filter was the problem, the coils should begin to thaw, and the air conditioner should begin running soon. If the problem does not resolve itself, other factors to consider include: A wet filter may indicate that the coils are frozen, as the large amount of condensate is averting the drain pan. The coil itself is likely dirty, which can inhibit heat transfer as well as airflow. Refrigerant levels may be too low. In the case of a wet filter, dirty coil or low refrigerant, it’s best to let a professional diagnose the problem. If you need help with A/C coils freezing up, contact Jon Wayne Heating & Air Conditioning. For almost 40 years, our experts have served homeowners in the greater San Antonio area with quality HVAC services, installation and repairs.

Give us a call today. Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems).  For more information about air conditioners and other HVAC topics, download our free Home Comfort Resource guide. Jon Wayne Heating and Air Conditioning services  San Antonio and the surrounding communities of Seguin, New Braunfels, Bulverde, Boerne, and Comal County.  Visit our website to see our special offers to get started today! blog comments powered by Jon Wayne is proud to be affiliated with these fine organizations: GENEX A/C systems have Seasonal Energy Efficiency Ratings (SEER) up to 18. These central air conditioners are excellent, high efficient units for the home and also applicable for offices, buildings and restaurants. GENEX Mini-split systems offers all the advantages of central air conditioning with increased efficiency. You'll enjoy the benefit of our inverter technology and flexibility. SMART MULTISPLIT SYSTEM (SMS)

GENEX SMS offers economically precise, individual comfort control to multiple spaces simultaneously while enjoying maximum efficiency and less power consumption.Why is my R-22 air conditioner freezing up?This story is produced and presented by our sponsor, AJ Perri.Air conditioners are meant to cool down temperatures, but did you know that an air conditioner itself could actually get too cold? up draft ac unitThat’s right, too cold. split unit ac not coolingWe know it’s hard to believe. air conditioner unit 3 tonAir conditioners can actually freeze up.There are a handful of reasons why an air conditioner may freeze up; we’ll dive a little deeper into each of those reasons below:Essentially, what happens is Freon in the air conditioner may be expanding more than it is designed to.

Or a blockage has occurred, preventing air in a home from transferring heat into the air conditioner system, causing a freeze up in the unit.This can happen when…There is insufficient airflow across an air conditioner’s evaporator coil.When an air conditioner is low on Freon.When an air conditioner is run when the outside air is below 62 degrees.Or when there is a mechanical failure, aka a kink in refrigerant lines, etc.An air conditioner cools by taking out heat from a home. If an air conditioner isn’t properly blowing inside air over the evaporator coil then the required heat exchange won’t occur, causing the Freon that should be removing heat from a home to fail from doing just that.Low pressure in an air conditioner means there is less Freon in the system, but the system is still being forced to expand the same amount, the more expansion equals a cooler temperature.Air conditioners are designed to be run in a specific temperature range. If the air outside is below 62 degrees then the pressure inside the air conditioner will drop, causing an air conditioner to freeze up.

A frozen air conditioner is never good for the unit itself and it will not cool your home properly, costing you more in utility bills.Unfortunately, unlike some problems, this one will not solve itself. A frozen air conditioner is a problem that should be addressed immediately by a professional HVAC technician.Contact A.J. Perri if you are experiencing a frozen air conditioner at your home, we’d be glad to give you a hand.A.J. Perri has been serving New Jersey homeowners since 1971, with years of experience and a national reputation for superior technical skills in heating, air conditioning, plumbing and indoor air quality systems. They service those in Bergen, Essex, Hudson, Mercer, Middlesex, Monmouth, Morris, Ocean, Passaic, Sussex and Union counties. or give them a call at (732) 654-0604. Get personalized answers from home improvement experts As a rule of thumb, 400 square feet per 12,000 BTUs (12,000 BTUs equals one ton of air conditioning). However, you must account for other factors which will affect the total heat load.

Please click the following link to find your cooling need. 3 Years with warranty registration OR 1 Year for unregistered units. Click the following links to view our standard warranty. Classic 10, Office Pro 12, Classic Plus 14, Office Pro 18, Office Pro W20 (115 volt-standard household current) Office Pro 24,Office Pro 36, Office Pro 60, Classic Plus 26 (208/230 volt single phase) Classic 40 (220 volt three phase) Classic 60, Office Pro 63 (460 volt three phase)Length specified is total length in and out of unit. For condenser plenum, 10’ inlet and 10’ outlet = 20 total feet. Each 90 deg bend = approx 8’-10’ of duct. Blocking one duct is not recommended. Too much static pressure can build up and the unit will shut down. We recommend extreme caution when using extension cords. The following guideline is recommended: It must be safety listed and 3-wire grounding type appliance extension cord. The marked rating of the extension cord should be the same as the voltage requirement and the recommended fuse size on the specification sheet.

Note: Before clearing the diagnostic code, be sure to find and correct the problem. For the Office Pro units with the old controller (Units manufactured before April 2007 with a green LED): 1) Unplug the unit and wait for 5 seconds. 2) Push and hold the HRS and MIN buttons simultaneously. 3) Then plug the unit in while still holding the buttons. For Classic Plus units with the old controller (Units manufactured before April 2007 with a green LED): 2) Push and hold both fan speed buttons simultaneously. For units with the new controller (for all Office Pro and Classic Plus units manufactured from April 2007 to present): Press hold COOL ON/OFF and FAN HI/LO simultaneously for 5 seconds. For units with the new controller: - CL10 (Units manufactured from January 2008 to present) - CL40 (Units manufactured from May 2009 to present) - CL60 (Units manufactured from April 2009 to present) Hold down both SET TEMP buttons (up & down arrows) simultaneously for 3 seconds.

CM25 & CMW30 - Swing Inverter, 2 Years on the Unit and 3 Years on the Compressor with warranty registration OR 1 Year on the Unit and 3 Years on the Compressor for unregistered units. The compressor adjusts its speed based on the temperature in the room minimizing power consumption. Unlike conventional compressors which cycle on and off repetitively, an inverter compressor has the ability to adjust its speed based on the amount of cooling needed. This helps eliminate the wear and tear of constant starting and stopping. The pistons in a swing compressor move smoothly, decreasing friction and vibration. It also prevents the leakage of refrigerant gas during compression. CM12 (115 volt-standard household current) CM25 (208/230 volt single phase) CMW30 (208/230 volt single phase) Refer to the following table, "Connecting thermostat to CM12 unit" on the operation manual. Connect RC on the thermostat to RC on the unit, Y on the thermostat to Y on the unit, G on the thermostat to G on the unit.